Core-mold for concrete structures.



W. H. EVERS.

CORE MOLD FOR CONCRETE STRUCTURES.

APPLICATION IILED MAR. 15, 1913 1,099,171.

Patented June 9, 1914.

,WILLIAM H. EVERS,..

Specification of Letters Patent. Application filed March 15,1913. Serial No. 754,51

PATENT @hFEQE.

or ,LAKEWOODZ out o.

CORE-MOLD non concanrnsrauoruans.

Latcnted June 9, i91

=:-, .1 all whom-it may-concern: the'work at hand, to accommodate the num- Be it known that =1", WILLIAM H. Evans, a ber of-beams or shameto be molded at each citizen of the United -'States,-residing at. operation. Against one side of this box is -:-:1Lakew0od, in the county of Ouyahoga and placed one of the core sections, consistin of so 5 State of Ohio, have invented certain new a fiat plate 6, to which is attached the e ges and useful Improvements in Gore-Molds for of a longitudinally extending core plate G Concrete Structures, of which the followconveniently formed by bending or shaping 'ing is a specification. apiece of sheet metal according to the dc This invention'reiates to molds for con-" sired outline of the recess or core to be a crete structures and p-rovidesa cheap, ser produced in the side of the beam; In the viceable, simple, and practical core-mold, illustration shown, this plate 6 is semi-ciryforr'the.-manu facture of .reinforcedrconcretc cular in cross section it extends. the full constructions such as hollow beams and girdlength of the mold box. ers, and has the following objects: first, to 10 is a bottom plate with ribs which is 15 make it possible to build in the factory, a re then set on the bottom of the frame, the ribs; inforced concrete beam or girder of any being provided to produce the lateral and length, and of very light weight, so that longitudinal grooves or depressions in the its transportation to the place of erection compression flange of this. beam, so that is easy, and that said beam or girder can proper adhesion can be secured for the ap- 2 then readily be placed in position for long plied plasterer other surfacing material to a, spans, without the use of forms and supthe finished beam. At the edge of this plate ports; second, to provide a minimum section 10 is placed another core section consisting of concrete inthe building of the shape; of theplates 6 and 6, in opposite relation third, to properly position and hold in place to the core section above described, and 25 in the mold, the metallic reintorcement. so against the second core section is applied that after concrete is poured in said mold, another core section for the next beam; and the metal is properly bedded in concrete for so the box is filled with bottom plates and protection against oxidation and fire, and core sections to accommodate the number of 1 will take up all shear and bending mobeams desired to be molded. 3o ments of applied outside forces; fourth to Between the respective side'cme sections provide core-molds which can be used in are placed spacing or partition plates 7, the conjunction with each other, so as to cast shape or outline of whic exactly corremany beams or girders side by side at one sponds to the section of th beam to be prooperation; fifth, toprovideacore-moldeasily duced, these plates having cut out portions 99 disassembled, without injury to the exterior to receive the core plate 6*, as clearly shown of the newly formed beam or girder. in Fig. 7 The plates 7 are notched at thx The invention will be readily understood bottom as indicated at 8, to tit the longi-k from the following description for using the tudinal rib on the bottom plate 10. This exmold in the building of a beam of I section. actly positions the spacing plates and holds 40 In thedrawings Figure 1 is a detail in the same in place on the bottom plate. The perspective of one of the core sections. Fig. spacing plates will be set a distance apart 2 is an endview of associated core sect-lion. corresponding to the length ofbeam de- Fig. 3 isan elevation/of a separator or sired and if the box be long enough several spacing plate. Fig. his a perspective view beams may be molded end to end. 100

45 of a bottom or rib plate. Fig. 5 is an el'e- The plates 7 are provided with holes 9 'vation of a clip for holding a reinforcing at top and bottom to receive the longitudibar inposition. Fig. 6 isan end view' of an nal reinforcing bars 12 and 18, the bar 12 J arrangement of metal reinforcements. ig. being also supported between the arms 11 7 is a sectional/view. of the mold with variof clips 11 set on the longitudinal nb 10? 50 one parts assembled. Figwfisis-a plan view of the plate 10. And the reinforcing rods "offthe parts'shown in Fig, 7. or. wires 30, as desired, may be wound or "fteferringispecifically to the drawings, 20 bent around the bars 12 and 13 before the indicatesthe sides and 21 the bottom boards concrete is poured.

of a nibldbcx or frame in which the vari- In the construction of beams with this ous sections of the mold are set up. This .mold, abox of proper, dimensions is built,

- may boot any siaeg'desired according to and the side core and spacing plates are and removin the half core section at one side and taking out. theqfinished beam and the following core sections in consecutive order, the" supportirigaplates and'rib plates being detached by light tapping.

The apparatus may bemodified in various we 1 to Construct different shapes of beams, Wi different methods of reinforcing, and no limitation in this respect is implied.

by side.-

After the beams are made they can be transported to the place of use and set u in a. building without making special mo ds in situ as customary.

What I claim as new is:

A mold for concrete beams and the like, having a bottom plate provided with a rib, spacing cross plates held in position by the rib, said cross plates having openings to support reinforcing bars in position, and clips on said rib, to engage an hold one of said bars in position.

In testimony whereof, I do aflix my signature in presence of two witnesses.

' WILLIAM H. EVERS.

RALPH Soon".

flopiol of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, .D. G. 

